Expression lines, forehead wrinkles, and marionette lines are common signs of aging that can be treated with injectables like Botox and dermal fillers. Botox injections can help to relax the muscles that cause wrinkles and lines, while dermal fillers can add volume to the area and smooth out wrinkles and fine lines. These treatments are non-surgical and require minimal downtime, making them a popular choice for those looking to rejuvenate their appearance.